Electric key selecting and striking mechanism.



No. 762,644. PATENTED JUNE 14, 1904.

E. J. LEONARD. ELECTRIC KEY SELECEING AND STEIKING MEGEANISM.

APPLICATION FILED FEB. 21, 1902.

NO MODEL. 6 SHEETS-SHEET 1.

37 Il l 59 @E 5 Q. i 1 l ATTOR my No. 762,644. PATENTED JUNE 14, 1904..

A. J. LEONARD.

ELECTRIC KEY SELEGTING AND STRIKING MEGHANISM.

APPLIGATION FILED PEB. 21, 1902.

N0 MODEL. B SHEETS-SHEET 2.

Wlllillm f 'il )grind/ew J. Leonard Nq. 762,644. y PATBNTBD JUNE14,1904.

' A. 1. LBUNARD.

ELECTRIC KEY SELECTING AND STRIKING MECHANISM. N0 MODEL APPLIOATIONFILED FEB. 21, 19o2.

www BY WMM, M@

A TTORNEKJ m5 'Nonms Parana co. Premaman. wAsmumcN, 1.7v c.

No. 762,644.- PATENTED JUNE 14, 1904.

.4. J. LEoNAED. ELECTRIC KEY SELECTING AND STEIKING MEGEANISM.

APPLICATION FILED FEB. 21, 1902.

N0 MODEL. 6 SHEETS-SHEET 4.

NVENTOR. /Jndrew ffl. eonard ATTO N559 rn: mams PETERS no. Pnoaumo.WASHINGTON, n r.

PATENTED JUNE 14, 1904.

A'. J. LEONARD. l ELECTRIC KEY SELEGTING AND STRIKING MEGHANISM.

APPLICATION FILED PEB. 21, 1.902.

6 SHEETS-SHEET 5.

N0 MODEL.

JNI/ENTOR. 4j4r1c1rvew/ff Leonard BY Zz y Ao NEYQ WITNESSES:

No. 762,644. l PATENTED JUNEVILL, 1904.

. A. J. LEONARD.

ELECTRIC KEY SELECTING AND STRIKING MECHANISM.

APPLICATION FILED FEB. 21, 1902.

N0 MODEL. 6 SHEETS-SHEET 6.

/ A f. y ."1

WITNESSES: NVEZVTOR.

` fndrew J. L eonard AHORA/E49 me wams wenns co4 wnmummwummcm u c -ofline 7 7 in Fig. 3.

Patented June 14, 19011,

PATENT OEETCE.

AYDRET J. LEONARD, OF DENVER, COLORADO.

ELECTRIC KEY SELECTING AND STRIKING MECHANISNI.

SPECIFICTION forming part of Letters Patent No. 762,644, dated June 14,1904.

Application led February 21,1902. Serial No. 95,110. (No model.)

To all whom, it may concern:

Be it known that I, ANDREW J. LEONARD, a

citizen of the United States, residing at Denver, in the county ofArapahoe and State of Colorado, have invented certain new and usefulImprovements in Electric Key Selecting and Striking Mechanism; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same. Y The present invention relatesto improvements in electrically-operated keyboard-machines, and has forits object the selection and striking of a particular key.

Another object is the attaining` of the above result with a minimumnumber of magnets, the structure being such as to require only theeffort of comparatively small magnets for the selecting' operation andof but one large solenoid for accomplishingr the striking of all thekeys.

lith these and other'objects in view the invention consists in certainnovel constructions, combinations, and arrangements of parts, as will behereinafter fully described and claimed.

In the accompanying drawings, Figure l represents a View in sideelevation of a device enibodying the features of the present invention,the side wall of the solenoid-inclosing casing being cut away for betterillustrating the parts. Fig. 2 represents a similar View of aslightly-modified form of the same. .Fig 3 represents a top plan View ofthe device as shown in Fig. l. Fig. 4 represents a longitudinal verticalsection through ,the key-choosing part of the invention on the plane ofline 4 4 in Fig. 3. Fig. 5 represents an enlarged detail section throughthe connecting-rod, showing its cushioning-spring. Fig. 6 represents anenlarged detail fragmentary View of the auX- iliary-cireuit make andbreak. Fig. 7 represents atransverse vertical section on the plane Fig.8 represents an enlarged detail side elevation of one of the keystrikingpins detached. Fig. 8 represents an enlarged detail side elevation ofone of the keystri king pins detached, showing the open slot. Fig. 9represents a detail View in elevationrof one ofthe cross-bars. Fig. 9represents a detail view, in top plan, of one of the cross-bars withitsattachment for partially rotating a key-striking pin. Fig. 10 representsan enlarged detail sectional view of one of the striking-pin collars.Fig. 10L represents a view in side elevation of one of the striking-pincollars. Figs. 11 and 12 represent, respectively, enlarged detail View,in side elevation, and a similar View, in top plan, of thesolenoid-circuit make and break.

The accompanying drawings represent my improved key selecting andstriking device as applied to an adding-machine--such, for instance, asis fully illustrated and described in Letters Patent No. 366,945; but itwill readily appear that l may apply the same to any form ofcalculators, type-writers, linotypes, and similar keyboard-machines asdesired.

Unless otherwise specified in the description which follows it will beunderstood that all parts of this machine are of metal, and consequentlycapable of carrying an electric current, and it will further heunderstood that parts not spoken of as being non-conductors or insulatedfrom other parts to which they are attached or bear against are inmetallic contact.

Mounted on top of the box-like base or inclosing casing l, which ispreferably of wood fiber or other non-conducting material, is theframework 2. On the under side of the top of this inclosing casing 1 isiixed the solenoid 3 and the make and break, spoken of generally as 4,of the solenoid-circuit.

At one end of the machine is a series of magnets 6, placed transversely,and at one side of the machine another series of magnets 7,

placedlongitudinally thereof. In thedescription which follows themagnets (i at the end of the machine are referred to as end magnets, andthose at the side of the machine are referred to as side magnets. Theend magnets 6 and the side magnets 7 constitute the key-choosing orkey-selecting magnets. It will be observed that the magnets are inpairs, commonly referred as double mag'- nets. Hereinafter one pair willbe spoken of as a magnet.

.Y As will be shown later, an electric current must be passing throughone end magnet and one side magnet to complete the key selection. Thecurrent sent through an end magnet and IOO a side magnet may be from thesame source of supply or may be separate currents.

In the series of end magnets 6 the number of magnets correspond to therows of keys crosswise in the machine to which this improvement may beapplied. The end magnets 6 are mounted beneath and secured to the-bar 8,and this bar is insularly attached to the frame 2, it being insulated bythe non-conducting strips 9.`

On the shaft 10, which is secured transversely of the frame 2, arepivoted the armatures 11 for the end magnets 6, there being one armaturefor each magnet in the series. A strip 12, supported by the posts 13 and14, holds the armatures 11 in their normal position. Each of thearmatures 11 is provided with an arm 15, projecting downwardly therefromand adapted to engage the notched end of one of the sliding levers 16,there being one sliding lever for each end magnet 6. These slidinglevers 16 are slotted, as at l16, so as to slide on` the shaft 17,arranged parallel with shaft 10, beneath the same, lwhereby said levers16 may be given a longitudinal thrust that will bring their free ormovable ends into position to be engaged by a strip 18 at the end of thedouble arm 19, which I shall refer to as the main operating-arm, for itis through the medium of this arm that all the sliding levers 16 aremoved laterally. The main operatingarm 19 is pivoted on the same shaft17. Suitable springs 20, attached at their upper ends to atr'ansversely-arranged bar 20 and at their lower ends to the slidinglevers 16, hold the same in their normal position, which is against thestop 21 and back from under the strip -18 on the main operating-arm 19.

Rotatably secured in the frame 2 is a transversely-arranged rock-shaft22, provided with two side arms 23 and 24 and its middle arm 25, eachrigidly secured thereto and extending longitudinally vof the frame. Theside arms 23 and 24 of the rock-shaft 22 are connected by the links 26and 27, respectively, to the two sides of the main operating-arm 19. Aswill be apparent,downward movement of the free end of arm 25 willpartially rotate rock-shaft 22, and the motion of the shaft'22 istransmitted through its side arms 23 and 24 to the links 26 and 27,thereby moving downwardly the two sides of the main operatingarm 19.This arrangement insures an equal travel of both sides of the mainoperatingarm, preventing binding, which is the chief purpose of theshaft 22, though another function of the said shaft is to operate theauxiliary-circuit make and break. Said make-andbreak consists of arm 28,pivoted, as at 31, and formed with a laterally and downwardly projectinglug, as 28', at its free end, formed with an arc-sha ed slot, as 34,therein an in-v sulator-piece 29, of hard rubber or wood liber,

and a contact-spring 30, .tixedl'y attached to the frame 2, butinsulated from the frame 2 by the non-conducting strip 33, as will bebest seen by reference to Fig. 6. The arm 28 is insulated from the frame2 at the point of its pivot 31 by a non-conducting washer 32. Theinsulator-piece 29 forms a portion of the bearing surface designed tobear against the spring-contact 30 when the auxiliary circuit is brokenbetween the arm 28 and the springcontact 30. Y f

A non-conducting pin 34, which forms the pivot connecting the link 26and the side arm 23 of the'shaft 22, projects into slot 34/, the lengthof 'said slot being such that when said shaft 22 is nearing the end ofits downward stroke the pin 34 will engage the lower end of the slot,carrying the arm 28 down with it until metallic connection between thearm 28 and the contact-spring 30 is broken.

rlhe middle arm 25 of the shaft 22 is pivoted to a connecting-rod 35,the lower end of which is pivoted to the lever36, and the lever 36 ispivoted to the link 37 and to the armature 38 of the solenoid 3, saidlink 37 being pivoted to a suitable fulcrum 5.

From the foregoing it will be seen that any one of the series of slidinglevers 16 in position to be engaged by the main operating-arm 19 wouldfollow the movements of the main operating-arm 19 when it is actuated bythe armature 38 of the solenoid 3 through connecting-rod 35. Vrlhe mainoperating-arm 19 and the solenoid-armature 38 are returned to theirnormal position by the spring 39, at-

tached at one end to lever 36 and at the other to the top of easing 1.

The series of side magnets 7 is made up of double magnets-similar to theend magnets, and the number of magnets at the side of themachinecorrespond to the number of keyrows lengthwise in the machinewhich is to be operated. rl`he side magnets 7 are mounted on thebase-bar 41, which is insulated from the lower cross-pieces 42,supporting it by the non-conducting strips 43.

Two standards 44 support the shaft 45, on which is pivoted the series ofarmatures 46, there being one armatiire for each magnet in the series ofside magnets. Each armature 46 is provided rwith an arm 47, projectingdownwardly therefrom and adapted to engage in the fork 48xL of one of aseries of sliding bars 48. The sliding bars 48 are slottedlongitudinally and connected to the Lipper cross-bars 49 by the screws5() passing through the slots. .lt will therefore be apparent that anymovement 0f the armatures 46 will cause the sliding bars 48 to slidelongitudinally on the screws 50. The series of sliding bars 48 and thearmatures 46, adapted to operate them, are held in their normal positionby the springs 51, the tension of which is controlled by theadjusting-screws 52 and the nuts 53.

The sliding bars 48 have a series of flaring apertures, as 48, toreceive suitable turningpins 54. A number of collars, as 55, are ar- IOOIIO

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ranged rotatablyin apertures in each crossbar 49, and each collarcarries a verticallyshdable striking-pin 56, said pmbeing termed .withan open slot in its upper end. The

56 as there are keys in the machine to which this improvement may beapplied. The collars are provided with flanges 55/, which form a bearingon one side of the upper cross-bars 49, and the turning-pins 54 bear onthe other side for retaining the collars against longitudinal movement.The upper crossbars 49 are supported by suitable standards 57, whichrest on the lower cross-bars 42.

The key-striking pins 56 are held in their normal position relative tolevers 16 by the series of springs 51 acting througl'i the arms 47, thesliding bars 48, the collars 55, and the turning-pins 54. lhen thekey-striking pins 56 are in their normal position relative to levers 16,the two projections at their top serve as guides to keep their open slotin line with said levers. The key-striking pins 56 are held in theirnormal position vertically by the springs 58 pressing the closed end oftheir open slots against the turning-pins 54. It will be observed thatthe pins 56 are each cut away for one-quarter of each half, leavingdiametricall y opposite quarters projecting upwardly above shoulders, as56.

W' hen the turning-pins 54 in any particular cross-row through the pullof the armature 46 actuating them give a partial turn to all thekey-striking pins 56 in that cross-row, the shoulders 56 on thekey-striking pins 56 are brought under the sliding levers 16, which runlengthwise ofthe machine, so that any ot' the sliding levers 16 that maybe givenadownward pull will eng'age the shoulder of the key-striking pin56 immediately under it.

'1 he solenoid 3 consists otl the spool formed by the tubey 59, whichmay be of'any nonmagnetic metal or of wood liber or hard rubber, fittedwith non-conducting' end pieces or insulators 60 and 61, this spoolbeing' wound with magnet-wire, as is well known, and having' theterminals 62 and 63. rlhe insulator 60..is set Hush with one end of thetube 59 and has a larger diameter than the winding of wire on the spool,allowing space for the screws 64 with which the solenoid 3 is attachedto the base 1. The tube 59 eX- tends beyond the insulator 61, suchextension serving as a guide for 'the armature 38. This extension isslotted to allow the pivot 65 to follow the movements of thesolenoid-armature 38.

The electromotive force necessary to pass through the solenoid 3 tooperate some oit' the machines to which my improvement may be appliedmakes when the circuit is broken a spark that will bridge acrosscontact-points only slightly separated, preventing a complete stoppageof the current, and even itl the current be stopped by making thedistance between contact-points so great that the cui'- rent will notjump there will be enough sparking to burn and injure thecontact-points. The electric current would also cause a disagreeableshock to any one who might get a portion ot their body in its circuit.For these reasons l provide an electrical]y-operated makeand-break forthe solenoid-circuit, which obviates the necessity el making' themachine a part ot' the circuit for the solenoid-current and admits theuse of apparatus to blow out the electric spark.

rlhe electrically-operated make-and-break, (best seen in Figs. 11 and12) consists ot' the non-conducting base 66, en which are mountedmagnets 67, a magnet 68, a U-shaped support 69, in which anarmature-lever is pivoted; a vbracket 7l with an adjusting' stop-screw72 designed to limit the movement et armaturelever70, and thecontact-point 73, which bcing mounted on the non-conducting base 66 isnormally out ot' contact with other metallic parts ot' themake-and-break. An adjustingscrew 74 is threaded through lever 70 andserves as a stop to the downward movement ot' the armature 75, as wellas a means ot' electrical contact with the contact-point 7 3. The magnet68 has its poles extended forming curved end pieces 77 and 78,approaching each other at a point near and above contact-point 73. Inthe description et' connections to t'ollow it will be made clear how anelectric current passed through the magnets 67 pulls the lever 70 downuntil the adjusting-screw 74, passing between the ends ot' pieces77 and78, touches the contact-point 73, completing a circuit through thesolenoid 3. 'hen lthe current through the magnets 67 is broken, thelever 70 is returned by a spring 76 to its normal position and themagnetic flow between the curved end pieces 77 and 78 of the magnet 68blows out the electric spark between the contact-points 73 and 74. Themagnet 68 is preferably supported in position by non-magnetic standards79 and 80, and said magnet may have an electric flux flowing through itconstantly while the machine is in operation, or its electric flux mayonly be flowing while the current is flowing through the solenoid 3, forI tind that it the current through the magnet 68 be broken at the sametime that the solenoid-currentis broken there remains enough magneticliow between the end pieces 77 and 78 to effect a blowing out of theelectric spark between the points 73 and 74, where the solenoid-circuitis made and broken. The eircuit of this electrically-operatedmake-andbreak is made through the machine, being completed by thearmatures or' both series et' key-selecting magnets and broken by theauX- iliary-circuit make and break through the movement of arm 28.

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The solenoid-armature 38 in operation starts with a suddenness or jerkthat is not desirable in a calculator. So to make the beginning of thestroke as transmitted to the calculatorkeys less sudden or with less ofa hammer-like blow the spring 81 is put in any suitable housing 81 forconnecting the two parts of the connecting-rod 35.

It having been shown that the series of sliding levers 16 may be engagedso as to be actuated by the armature 38 of the solenoid 3 and that thekey-striking pins 56 may be put in position to be actuated by thesliding levers 16, I will now explain how the electrical circuit whichoperates to strike a key that has been selected is made by thekey-selecting magnets through the armatures thereof when they havecompleted the selection of a key and also how the circuit is broken whenthe key has been struck.

, Referring to the series of end magnets 6,- in the center of the coreends of these magnets are small studs 82,0f non-magnetic metal,preferably copper or brass. rlhe purpose of these studs 82 is to keep thearmatures 411 out of magnetic contact with the soft-iron magnetcores,preventing sticking and also to make metallic contact with the base-bar8, which, it will be recalled, is insulated from the frame 2. The objectof making metallic contact between the magnet base-bar 8 and the frame 2through the apertures will appear later.

The side-magnets 7 core ends are {itted with similar studs 83 forsimilar purposes-27. e., to keep the armatures 46 out of magneticcontact with the magnet-cores and at the same time to establish metalliccontact between the magnet base-bar 41 and the other parts of themachine.

It will now be apparent that when an endmagnet armature is in contactwith the stud which acts as its stopthe bar is in metallic contact withthe framework of machine and the bar on which the side magnets aremounted is likewise put in metallic contact with the frame byone of theside-magnet armatures coming in contact with its stopping-stud.

rIhe base-bar 8 of the end magnets 6 and the base-bar 41 of the sidemagnets 7 both being in metallic contact with the frame 2 are inmetallic contact with each other, and consequently may form part of anelectric circuit. I

The end-magnet base-bar 8 is connected by the'wire 84 to one side of anelectric battery or other source of electric supply. The sidemagnetbase-bar 41 is connected by the wire 85 to the movable arm 28 of theauxiliary-circuit make and break. The spring-contact 30 of theauxiliary-circuit make and break is connected by the wire 86 to one sideof magnet 67 the other side thereof being connected by the wire 87 tothe side of the battery opposite that to which the wire 84 is connected.

An electric current passed through any one of the end magnets and acurrent passed through any one of the side magnets 7 will bring theirrespective armatures against the spring 30, wire 86, magnetic coil 67,and wire 87 back to negative pole of the source of supply, thus closingthe solenoid-circuit, causing the upward movement of thc inner end oflever 36, thereby pulling down rod 35, rotating rock-shaft 22, causingstrip 18 to engage the selected lever 16 for operating' the particularpin 56, the arm 28 moving downwardly with pivot 34 until the contactbetween it and spring 30 is broken, whereby the magnet 67 will releasearmature-lever 70 and the solenoid-circuit will be broken, the springs39, 20, and 51 causing the parts to automatically reassume their normalposition.

It will be apparent that the side magnets will be provided with suitablewiring, such as is indicated in Fig. 1, andthe end magnets similarlywired, as seen in Fig. 3, in each instance a common return-wire beingemployed. It will further be seen that any suitable switchboard may beemployed for effecting the completion of a circuit through one of theend magnets and a circuit through a side magnet, and when these twocircuits have been closed the remainder of the operation will beautomatic, as above described.

In Fig. 2 I have illustrated a slight modification of the presentimprovement, the operating solenoid being arranged above instead ofbelow the key selecting and Striking mechanism, and although I havespecifically set forth one particular embodiment of the presentinvention, yet it will be understood that I contemplate making suchalterations in the minor details of structure as are fully comprehendedwithin the spirit and scope of the invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. In a mechanism of the class described, the combination with asuitable framework, of key-striking `pins rotatably mounted andlongitudinallymovable therein, and electrical means for operating thesame, substantially as described.

2. In a mechanism of the class described, the combination with aframework, of keystriking pins rotatably arranged therein and adapted tobe moved out of their normal horizontal plane, electric means forselecting a pin to be operated, and means for operating said pin,substantially as described.

3. In a mechanism of the class described,

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the combination with a framework, of rotatably-mounted and bodilylongitudinally movable key-striking pins arranged therein, electricmeans for striking a pin to be operated by rotation of the same, andmeans for operating said pin, substantially as described.

In a mechanism of the class described, the combination with a framework,of keystrikingpins arranged therein, a series of electromagnets arrangedin said framework, selecting means for said pins controlled by saidmagnets, electric means for operating a pin selected, and meanscontrolled by each of said magnets for closing the circuit of saidcontrolling means through its core, substantially as described'. I

5. In a mechanism of the class described, the combination with asuitable framework, of longitudinally-movable key-striking pinsrotatably mounted therein, electric means for rotating said pins forselecting one to be operated, and electrically-actuated means forshifting said pin longitudinally, substantially as described.

6. In a mechanism of the class described, the combination with aframework, of an electromagnet mounted therein, a series of axially andotherwise bodily movable key-striking pins arranged in said framework, apivoted armature for said magnet, means controlled by said armature formoving said pins to an operative position, and means for operating oneof said pins when in such position, substantially as described.

7. In a mechanism of the class described, the combination with aframework, of a series of electromagnets arranged therein, a secondseries of magnets also arranged therein, key-striking pins rotatablymounted in the framework, means controlled by said magnets for rotatingsaid pins for selecting a particular pin to be operated,electrically-controlled means for operating said pin, and means forautomatically closing the circuit of said electrically-controlled means,substantially as described.

8. In a mechanism of the class described, the combination with asuitable framework, of key-striking pins mounted therein, andprovided'with open longitudinal slots, levers pivotally supported andextending through the slots of the respective series, a portion of theupper end of each of said pins being broken away, whereby diametricallyopposite shoulders are formed, means for rotating said pins for bringingtheir shoulders beneath their respective levers, and means for movingsaid levers for operating said pins, substantially as described.

9. In a mechanism of the class described, the combination with asuitable framework, of an electromagnet arranged therein, said magnetbeing provided with a pivoted armature, rotatably-mounted key-strikingpins arranged in said framework, means for rotating a particular pininto position for operation, a lever designed tooperate the pin sopositioned, means for moving said lever for operating said pin when thelever is in a given position, and means carried by said armature formoving said lever into operative position,substantially as described.

10.' In a mechanism of the class described, the combination with asuitable framework, of a series of pins arranged therein,laterallyarranged magnets, means controlled by said magnets for movingsaid pins into operative position, long'itudinally-movable leversnormally out of operative position, transverselyarranged magnets, meanscarried thereby for movingsaid levers into operati ve position relativeto said key-striking pins, and means for operating said levers,substantially as described.

l1. In a mechanism of the class described, the combination with aframework, of keystriking pins arranged therein, a series ofelectromagnets for selecting a particular pin to be operated, commonoperating means for all of said pins, a solenoid for actuating saidoperating means, an independent magnet, and means governed thereby forclosing the solenoid-circuit, substantially as described.

l2. In a mechanism of the class described, the combination with asuitable framework, of key-striking pins arranged in said framework,means for adjusting a particular pin into position for operation, alongitudinallymovable lever for operating said pins, electric means forshifting said lever longitudinally for bringing the same into operativeposition, and means for moving said lever for operating the pinselected, substantially as described.

13. In a mechanism of the class described, the combination with asuitable framework, of key-striking pins arranged therein, anoperating-lever for said pins, means for positioning the pin intooperative position relative to said lever, means for shifting said leverlongitudinallyT into operative position and means for moving said leverinto contact with said pin for actuating the same, substantially asdescribed.

14. In a mechanism of the class described, the combination with asuitable framework, of key-striking pins arranged therein, pinselectingmeans, means for operating the pin selected, a solenoid actuating saidoperating means, means controlled by said key-selecting means forclosinO` the circuit of said solenoid, and means carried by saidoperating means for controlling the breaking of the saidsolenoidcircuit, substantially as described.

l5. In a mechanism of the class described, the combination with asuitable framework, of key-striking pins arranged therein,electromagnets mounted in said framework designed to select a particularkey to be struck, means for operating the selected key, a solenoid foractuating said operating means, an electro- IOO IIO

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magnet designed to close the solenoid-circuit, means for closing thecircuit of said last-mentioned magnet through the cores of thekeyselecting magnets, and means operated by said solenoid for breakingsaid last-mentioned circuit, whereby the solenoid-circuit Vwill bebroken, substantially as described. y

16. In a mechanism of the class described, the combination with asuitable framework, of a cross-bar arranged therein, of collars mountedin said cross-bar, a Vpin carried -by each of said collars projecting'beyond said cross-bar, a sliding bar engaging said pins, a

key-striking pin longitudinally movable through each of said collars,each of said collar-carried pins passing transversely through itsrespective key-striking pin, whereby rotation of each of said collars isdesigned to rotate its particular pin, electric means for moving saidsliding bar for rotating said collars, whereby said key-striking pinswill be rotated, levers designed to operate said keystriking pins whenin a given position, and electric means 4for moving each of said leversinto operative position, substantially as described.

17. In a mechanism of the class described, the combination With asuitable framework, of rotatably-mounted key-striking pins arrangedtherein, levers pivotally mounted above said pins, means for rotatingone of said pins, means for shifting one of said levers into operativeposition relative to the rotated pin,and means for moving saidlast-mentioned leverfor actuating said last-mentioned pin, substantiallyas described.

18. In a mechanism of the class described, the combination with asuitable framework, of key-striking pins arranged therein,longitudinally-movable levers arranged in said frame\vork,designed toengage said pins when in a given position, means for moving said pins tosuch position, means for moving each of said levers longitudinally,means for operating said levers for actuating said key-striking' pinswhen said levers are at the limit of theirvlongitudinal movement inonerdirection, and means for returning the parts to their normalposition after each operation, substantially as described.

19. In a mechanism of the class described, the combination with asuitable framework, of rotatably-mounted,longitudinally-movablekey-striking pins arranged therein, a lever pivotally mounted above saidpins, means for shifting one of said pins into operative position.relative to the said lever, and means for moving said lever intocontact with the end of said pin for operating the same, substantiallyas described.

20. In a mechanism ,of the class described, the combination with asuitable framework, of key-striking pins mounted therein, means forselecting a particular pin to be operated, a lever for operating the pinselected, arms for operating said lever,a rock-shaft mounted in saidframework and pivotally connected with said operating-arms, and electricmeans for rotating said rock-shaft, substantially as described.

2l. In a mechanism of the class described, the combination with asuitable framework, of key-striking pins mounted therein, means forselecting a particular key to be operated, levers designed to operatesaid pins, selecting means for said levers,pivotally-supported armsdesigned to operate the lever selected, a rock-shaft mounted in saidframework, a plurality of arms projecting laterally therefrom andpivoted to' said operating-arms,a solenoid, an arm carried by saidrock-shaft, and connections between lthe solenoid and said lastmentionedarm, whereby operation of said solenoid is designed to rotate saidrock-shaft, substantially as described.

22. In a Vmechanism of the class described, the combination with asuitable framework, of key-striking pins arranged therein,operatinglevers arranged in said framework, means for moving said pins4into operative position relative to said levers, means for actuatingsaid levers for operating said pins when in a given position relative toeach other, and electrically-operated means forl shifting said leversinto operative position, substantially as described.

23. In a mechanism of the class described, the combination with asuitable framework, of key-striking pins arranged therein, selectingmeans therefor, means for operating said pins, a rock-shaft mounted insaid framework, electrie means for rotating said rock-shaft, means forcommunicating motion from said roekshaft to said key-operating means,and means controlled by said rock-shaft for making and breaking thecircuit of said electric means, substantially as described,

Q4. In a mechanism of the class described, the combination with aframework, of keystriking pins arranged therein, a series ofelectromagnets for selecting a pin to be operated, operating means forsaid pins, a solenoid for actuating said operating means, an independentmagnet, and an armature therefor designed to close the circuit of saidsolenoid when under the influence of the magnetic flux of theindependent magnet, substantially'as described.

25. In a mechanism of the class described, the combination with asuitable framework, of key-striking pins mounted therein, and providedwith open longitudinal slots, levers pivotally supported and extendingthrough the slots of the respective series, a portion of the upper endof each of said pins being broken away,A whereby diametrically oppositeshoulders are formed, electric means for rotating said pins for bringingtheir shoulders beneath their respective levers, and means for movingsaid levers for operating said pms, substantially as described.

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QG. In a mechanism of the class described, the combination with aframework, of keystriking' pins rotatably mounted therein,electromagnets arranged in said framework for positioning' a particularpin to be operated by rotation thereof, and mechanism for actuating saidpin after such positioning, substantially as described.

27. In a mechanism of the class described, the combination with asuitable framework, of key-striking' pins arranged therein, selectingmeans therefor, long'itudinally-movable and pivotally mounted leversarranged in said framework', means for moving said leverslongitudinally, and means for swinging' said levers upon their pivotsfor actuating' the keystriking pins, substantially as described.

28. In a mechanism of the class described, the combination with asuitable framework, of key-striking pins arranged therein, means foradjusting a particular pin in position for operation, a lever desig'nedto strike the same, a rock-shaft arranged in said framework, electricmeans for rotating said rock-shaft, means carried by said rock-shaft foroperating' said lever. and a make and break for the circuit of saidrock-shaft-rotating means controlled by the rock-shaft, substantially asdescribed.

29. In a mechanism of the class described, the combination with asuitable framework, of key-striking' pins mounted therein, means forselecting a particular pin to be operated, devices for operating the pinselected, an arm for actuating' said pin-operating devices, a rock-shaftmounted in said framework and carrying said arm, a solenoid, andconnections between the solenoid and rock-shaft for effecting' therotation of the latter, substantially as described.

30. In a mechanism of the class described, the combination withasuitable framework, of key-striking pins mounted therein, selectingmeans therefor, slotted levers arranged in said framework, meanspivotally supporting said levers and engaging the slots thereof forleaving the same free to move longitudinally, means for shifting' saidlevers longitudinally for positioning the same in operative relation tosaid key-striking pins, and mechanism for swinging' the said levers upontheir pivots, substantially as described.

3l. In a mechanism of the class described, the combination with asuitable framework, of key-striking' pins arranged in said framework,pin-selecting means, a longitudinally-movablc bar for operating the pinsas they are selected, means for shifting said bar into operativeposition, and electric means for actuating said lever for moving the pinselected, substantially as described.

32. In a mechanism of the class described, the combination withasuitable framework, of an electromagnet therein, a series of rotatableand bodily-movable key-striking pins arranged in the framework, meanscontrolled by said magnet for rotating said pins into operativeposition, and means for operating said pins when so positioned,substantially as described.

33. In a mechanism of the class described, the combination with asuitable framework, of an electromag'net mounted therein,rotatablymounted, bodily-movable, key-striking' pins arranged in saidframework, means actuated by said magnet for moving' said pins intooperative position, and means for olierating the pins when sopositioned, substantially as described.

34. In a mechanism of the class described, the combination with asuitable framework, of axially-movable key-striking pins mountedtherein, pin-selecting' magnets in said framework, common operatingmeans for all of said pins, and a solenoid for actuating' saidoperating' means, substantially as described.

35. In a mechanism of the class described, the combination with aframework, of. axiallymovable, vertically arranged key striking pins,and electric means for moving' said pins long'itudinally within thevertical plane thereof for effecting' the striking operation,substantially as described.

In testimony whereof I hereunto aflix my signature in presence of twowitnesses.

ANDRIV J. LEONARD.

IVitnesses:

GEORGE S. CLAsoN, IV. B. BUn'ris.

